Question 1

Analyze the following code:

function fn(a) {

console.log('test');

a--;

if(a>2) fn(a);

}

fn(6);

How many times will test appear on the screen?

Options :

A : One hundred twenty

B : One

C : Five

D : Four

Answer: D

Question 2

Analyze the following code:

let x 10;

console.log(x);

What exception will be thrown as a result of its execution attempt?

Options :

A :

ReferenceError

B :

RangeError

C :

TypeError

D : SyntaxError

Answer: D

Question 3

Which sequence of if ... else statements is incorrect?

Options :

A :

if ... else if ...

B :

if ... else ...

C :

if ... else ... else ...

D :

if ... else if ... else ...

Answer: C

Question 4

The minimum JavaScript online development environment will consist of:

(Select two correct answers)

Options :

A : a forum for developers to exchange information only

B : an online code editor

C : an interactive page with JavaScript documentation

D : the runtime environment

Answer: B,D

Question 5

Most errors in JavaScript code that the interpreter encounters

while the program is running cause exceptions to be thrown.

What do unhandled exception do?

Options :

A : The interpreter ignores unhandled exceptions,

the program continues to execute,

and no information is received.

B : An error message appears in the console

and the execution of the program is aborted.

C : An error message appears in the console

and program execution continues.

D : The interpreter removes the erroneous piece of code,

replaces it with corrected one,

and continues the program execution.

Answer: B